PURCELLVILLE, Va. (AP) — Authorities say a Purcellville teenager is dead after being shot by a police officer and that police were called because the teen was threatening suicide.

The Virginia State Police, which is investigating the shooting, says Purcellville police received a call Saturday for help with a 17-year-old threatening suicide. State police say that when a police officer arrived and approached the male teenager, he lunged at the officer with a knife and was shot.

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